Plan b pill

Ashley

So I took plan b pill dec 10. Had sex same day around 6-6:30 am that morning. Took the pill at 4 pm. Today is now Dec 20 and I have still not had any bleeding from the pill. I am cramping, chest kinda sore. Back sore too. Took 3 test so far say negative. I am freaking out. I don’t know when period will be just had d&c November 16th. He pulled out but I’m still worried. Anyone got any advice??